CEO of Amazon
Net worth: $18 billion
Amazon founder and CEO Jeff Bezos also had a great year, adding a cool $5.8 billion to his net worth as Amazon's stock jumped 50 percent in 2010. Bezos, who founded Amazon.com in 1994 and didn't turn a profit until 2001, has out-innovated the competition by evolving Amazon from an online bookseller to the world's largest online retailer for basically anything you want. Amazon also makes the popular Kindle e-reader, provides a music and movie streaming service, and allows companies to rent IT infrastructure services through Amazon's cloud platform.